Saved Bookmarks
| 1. |
\( \int \frac{1-\sin x}{\cos x} d x \) equals |
|
Answer» 1-Sinx = sin²x/2 + cos²x/2 -2sinx/2cosx/2 = ( cosx/2 - sinx/2 )² cosx = cos²x/2 - sin²x/2 = ( cosx/2 - sinx/2 )(cosx/2 + sinx/2 ) then put this values in given integration and substitute t = cosx/2 + sinx/2 it reduces in simple integration. |
|